Projeto do sistema de controle de um abrasômetro pinolixa segundo a ASTM G132
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Data
2019-07-15
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Universidade Federal de Goiás
Resumo
This project aims to design a control system for an pin-on-disk tribometer that complies to the ASTM G-132 specifications. For this, a model wastested in scale to the control system of the abrasometer, with assistance of a Arduino Uno, a bridge drive H L298N and several permanent magnet direct cut motors. From the tests with the model, it was observed that the control by pulse width modulation to speed of rotation of direct corrente motors, done by drives of the H type, could not ensure the nominal torque when low frequencies of motor power signal switching were used; which must be compensated
by the adequate selection of gear ratio of the motors. It’s also highlighted that after the construction of the abrasometer, it should be tested under known conditions, in order to validade the indications of frictional force and wear of the sample and ensure the reliability of the results obtained by it’s use.
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Palavras-chave
Abrasômetro, Arduino, Controle, Desgaste, Tribologia, Arduino, Control, Pin-on-disk tribometer, Tribology, Wear
Citação
COUTO, Bruno Ferreira. Projeto do sistema de controle de um abrasômetro pinolixa segundo a ASTM G132. 2019. 106 f. Trabalho de Conclusão de Curso (Graduação) - Escola de Engenharia Elétrica, Mecânica e da Computação, Universidade Federal de Goiás, Goiânia, 2019.